docs: def cli(ctx, *args, **kwargs):
      """ Command line interface for the brother_ql Python package. """
  
      backend = kwargs.get('backend', None)
      model = kwargs.get('model', None)
      printer = kwargs.get('printer', None)
      debug = kwargs.get('debug')
  
      # Store the general CLI options in the context meta dictionary.
      # The name corresponds to the second half of the respective envvar:
      ctx.meta['MODEL'] = model
      ctx.meta['BACKEND'] = backend
      ctx.meta['PRINTER'] = printer
  
      logging.basicConfig(level='DEBUG' if debug else 'INFO')